Guided digital anti-interception and anti-jamming device and method
An anti-interference device and anti-interception technology, applied in transmission systems, electrical components, etc., can solve problems such as poor real-time performance, inability to overcome implementation complexity, insertion loss, etc., achieve small insertion loss, overcome intermediate frequency signal leakage, and improve anti-interference. effect of ability
An anti-interference device and anti-interception technology, applied in transmission systems, electrical components, etc., can solve problems such as poor real-time performance, inability to overcome implementation complexity, insertion loss, etc., achieve small insertion loss, overcome intermediate frequency signal leakage, and improve anti-interference. effect of ability
CN113630152BActive Publication Date: 2022-02-08NAVAL UNIV OF ENG PLA
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[0093] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples.
[0094] like figure 1 The guided digital anti-interception and anti-jamming device includes an orthogonal receiving module 01, a space domain cancellation module 02, a spreading code synchronization module 03, a time domain cancellation module 04, a reference signal extraction module 05 and an orthogonal transmission module 06. Among them, the digital part of the orthogonal receiving module 01, the air domain cancellation module 02, the spreading code synchronization module 03, the time domain cancellation module 04, the reference signal extraction module 05 and the orthogonal transmitting module 06 digital part are in the digital signal processing device as It exists in the form of software, and the analog part of the orthogonal receiving module 01 and the analog part of the orthogonal transmitting module 06 exist in the form of hardwar...
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The invention discloses a guided digital anti-interception and anti-jamming device and method, comprising an orthogonal receiving module, an air domain cancellation module, a spread spectrum code synchronization module, a time domain cancellation module, a reference signal extraction module and an orthogonal transmission module; Extract the pilot signal as a reference signal at the receiving end, use the matrix inversion method to periodically update the spatial domain combining weights, and accurately nullify the interference on the pattern of the receiving antenna of the communication station without knowing the interference and signal direction , to suppress all kinds of strong external interference; using time-domain cancellation technology, the output signal of the reference extraction module is used as a reference signal to further suppress the residual strong external interference and the spreading code signal introduced by the transmitter, and restore the useful signal to the receiver; Complete two-level interference cancellation, small insertion loss, large dynamic range, fast cancellation speed, strong promotion of interference suppression algorithm, two-level reference cancellation also ensures communication quality, and good real-time signal processing.
Description
technical field [0001] The invention belongs to the technical field of communication anti-interference, and in particular relates to a guided digital anti-interception and anti-interference device and method. Background technique [0002] Interference and anti-jamming technology are mutually reinforcing and mutually restraining, and they continue to develop. The research, development and application of communication anti-jamming technology have attracted more and more attention. However, communication stations are often faced with harsh operating environments and are susceptible to various intentional or unintentional interferences, especially strong interferences facing countermeasures, so they cannot work normally. The weight-merging interference cancellation technology is an important technical means to solve the problem of radio frequency interference. The principle is to adjust the gain of multi-antenna received signals and combine them to complete the elimination of i...
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Patent Timeline
08 Feb 2022
Publication
CN113630152B
- IPC
- H04B1/71; H04B1/10
- CPC
- H04B1/7101; H04B1/71; H04B1/1036
- Inventors
- 郭宇; 李亚星